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调节器的闭环校验方法有接线简单、操作简便、节省校验仪器、校验速度快等优点、因此在自动化水平比较高的炼油、化工、化纤等企业里已得到广泛的应用。不过以前我们是针对Ⅱ型调节器来进行讨论的,对于Ⅲ型电动调节器是否也可采用闭环校验法,其测试原理和校验的方法步骤与Ⅱ型有什么类同和特殊的地方,本文就DDZ-Ⅲ型全刻度指示调节器谈谈如何采用闭环校验法。
The closed-loop calibration method of the regulator has the advantages of simple wiring, simple operation, saving of calibration instruments and fast verification speed. Therefore, it has been widely used in enterprises with high level of automation, such as oil refining, chemical industry and chemical fiber. However, we used to discuss for the type II regulator, for the type Ⅲ electric regulator can also be used closed-loop calibration method, the test principle and the verification method steps and type Ⅱ what are the same and special places, this article DDZ-Ⅲ full-scale instructions on how to use the closed-loop calibration method.